Malicious PDF — malware analysis report

Static analysis result for SHA-256 630415b549b05ca5…

MALICIOUS

PDF

78.0 KB Created: 2021-03-02 00:07:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 37022c1a57abd9510299cd952ef2f674 SHA-1: 0df1406a0c0cc9ef44f8b63979f9e954e492da3c SHA-256: 630415b549b05ca58926207818039bb3ad253ded888f648117e27a10901e7b0a
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous links to external websites, many of which are hosted on disposable domains, suggesting a link farm or redirection scheme. The document body, though heavily obfuscated, contains text related to 'list of piratebay proxy', likely a lure to drive traffic to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://dugedepap.ru/wix?keyword=list+of+piratebay+proxy.info PDF link annotation
    • http://instapodarok.site/pokemon_sun_and_moon_rom_download_fomqj3d.pdfIn PDF document text
    • http://dapajurop.mygamesonline.org/beats_studio_wireless_headphones_user_manual.pdfIn PDF document text
    • http://vizojuzoninunoz.scienceontheweb.net/xitisujoruxanadatijasi.pdfIn PDF document text
    • http://honey-love.ru/sony_ht-xt1_remote_codesvhe84.pdfIn PDF document text
    • http://pixunune.sportsontheweb.net/84587341323.pdfIn PDF document text
    • http://vaxiliwu.medianewsonline.com/vebujisoxoweferavodu.pdfIn PDF document text
    • http://capridigi.com/how_much_is_a_2015_jeep_worth1c3wb.pdfIn PDF document text
    • http://itasda.online/american_speak_outdeaa4.pdfIn PDF document text
    • http://kutatit.getenjoyment.net/guvofiluvagawoferuma.pdfIn PDF document text
    • http://dotenipago.medianewsonline.com/are_any_vampire_diaries_characters_in_the_originals.pdfIn PDF document text
    • http://jorowijedo.mywebcommunity.org/how_long_do_you_charge_simplehuman_mirror.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pupagerirawax.myartsonline.com/nortel_networks_phone_manual_t7208_change_name.pdfIn PDF document text
    • http://kafogateginoni.epizy.com/buber.pdfIn PDF document text
    • http://pojozija.onlinewebshop.net/sylvania_portable_dvd_player_charger_walmart.pdfIn PDF document text
    • http://nafaloputazesoj.rf.gd/form_1040_itemized_and_standard_deduction_worksheet.pdfIn PDF document text
    • http://wegugoleta.onlinewebshop.net/81776073226.pdfIn PDF document text
    • http://judewal.rf.gd/mivutezu.pdfIn PDF document text
    • http://lojabupabavize.onlinewebshop.net/rent_stabilized_lease_agreement.pdfIn PDF document text
    • http://ziwemasux.myartsonline.com/download_ebook_novel_fifty_shades_of_grey_bahasa_indonesia.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E0 5144 bytes
SHA-256: aaa92fd71b5593f7cb5675615b92c54f86b78c92772999f0ab53b26df338877a
font_01_sfnt_off00010782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10782 10368 bytes
SHA-256: 794186217a26fd2acb5778125727e18d73218cde0b0ed5b50a20b134b6bc17e9

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